The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 12, 2012
Filed:
Feb. 09, 2009
Tatsuhiko Iwasaki, Hiroshima, JP;
Masako Shinohara, Hiroshima, JP;
Tatsuhiko Iwasaki, Hiroshima, JP;
Masako Shinohara, Hiroshima, JP;
Mazda Motor Corporation, , JP;
Abstract
An automatic transmission comprises a multi-plate brake to brake a specified rotational element of a transmission mechanism, which includes a plurality of frictional plates, a piston, a piston cylinder member comprising cylinder in which the piston slides, and oil-pressure chambers which are formed between the piston and the cylinder and bias the piston toward the frictional plates with an oil pressure supplied thereto, and a valve body to supply the oil pressure to the oil-pressure chambers. Herein, the valve body is provided in the vicinity of an outer periphery of the piston cylinder member so as to be connected to the piston cylinder member via a connection portion, and there is provided an oil passage to supply the oil pressure from the valve body to the oil-pressure chambers via the connection portion.